package com.atguigu.gulimall.product.service.impl;

import com.atguigu.gulimall.product.entity.SkuImagesEntity;
import com.atguigu.gulimall.product.entity.SpuInfoDescEntity;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.SkuItemSaleAttrVo;
import com.atguigu.gulimall.product.vo.SkuItemVo;
import com.atguigu.gulimall.product.vo.SpuItemAttrGroupVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ThreadPoolExecutor;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.SkuInfoDao;
import com.atguigu.gulimall.product.entity.SkuInfoEntity;


@Service("skuInfoService")
public class SkuInfoServiceImpl extends ServiceImpl<SkuInfoDao, SkuInfoEntity> implements SkuInfoService {

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                new QueryWrapper<SkuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SkuInfoEntity> queryWrapper = new QueryWrapper<>();
        String key = (String) params.get("key");
        if (StringUtils.isNotBlank(key)) {
            queryWrapper.lambda().and((wrapper) -> {
                wrapper.eq(SkuInfoEntity::getSkuId, key)
                        .or().like(SkuInfoEntity::getSkuName, key);
            });
        }
        String catelogId = (String) params.get("catelogId");
        if (StringUtils.isNotBlank(catelogId)) {
            if(Long.parseLong(catelogId) != 0){
                queryWrapper.lambda().eq(SkuInfoEntity::getCatalogId,catelogId);
            }
        }
        String brandId = (String) params.get("brandId");
        if (StringUtils.isNotBlank(brandId)) {
            if(Long.parseLong(brandId) != 0){
                queryWrapper.lambda().eq(SkuInfoEntity::getBrandId,brandId);
            }
        }
        String min = (String) params.get("min");
        if (StringUtils.isNotBlank(min)) {
            BigDecimal minPrice = new BigDecimal(min);
            if(minPrice.compareTo(new BigDecimal(0)) == 1){
                queryWrapper.lambda().ge(SkuInfoEntity::getPrice,minPrice);
            }
        }
        String max = (String) params.get("max");
        if (StringUtils.isNotBlank(max)) {
            BigDecimal maxPrice = new BigDecimal(max);
            if(maxPrice.compareTo(new BigDecimal(0)) == 1){
                queryWrapper.lambda().le(SkuInfoEntity::getPrice,maxPrice);
            }
        }
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                queryWrapper
        );

        return new PageUtils(page);
    }

    @Override
    public List<SkuInfoEntity> getSkusBySpuId(Long spuId) {
        //查询所有的sku

        List<SkuInfoEntity> skuInfoEntityList = this.list(
                new QueryWrapper<SkuInfoEntity>().lambda().eq(SkuInfoEntity::getSpuId, spuId)
        );
        return skuInfoEntityList;
    }

    @Autowired
    SkuImagesService skuImagesService;

    @Autowired
    SpuInfoDescService spuInfoDescService;

    @Autowired
    AttrGroupService attrGroupService;

    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    ThreadPoolExecutor executor;
    @Override
    public SkuItemVo item(Long skuId) throws ExecutionException, InterruptedException {
        SkuItemVo skuItemVo = new SkuItemVo();
        CompletableFuture<SkuInfoEntity> infoFuture = CompletableFuture.supplyAsync(() -> {
            //1、sku的基本信息获取 pms_sku_info
            SkuInfoEntity info = getById(skuId);
            skuItemVo.setInfo(info);
            return info;
        }, executor);

        CompletableFuture<Void> saleAttrFuture = infoFuture.thenAcceptAsync((res) -> {
            //3、获取spu的销售属性组合
            List<SkuItemSaleAttrVo> saleAttrVos = skuSaleAttrValueService.getSaleAttrsBySpuId(res.getSpuId());
            skuItemVo.setSaleAttr(saleAttrVos);
        }, executor);

        CompletableFuture<Void> descFuture = infoFuture.thenAcceptAsync(res -> {
            //4、获取spu的介绍
            SpuInfoDescEntity spuInfoDescEntity = spuInfoDescService.getById(res.getSpuId());
            skuItemVo.setDesc(spuInfoDescEntity);
        }, executor);

        CompletableFuture<Void> baseAttrFuture = infoFuture.thenAcceptAsync(res -> {
            //5、获取spu的规格参数信息
            List<SpuItemAttrGroupVo> spuItemAttrGroupVos = attrGroupService.getAttrGroupWithAttrsBySpuId(res.getSpuId(), res.getCatalogId());
            skuItemVo.setGroupAttrs(spuItemAttrGroupVos);
        }, executor);


        CompletableFuture<Void> imageFuture = CompletableFuture.runAsync(() -> {
            //2、sku的图片信息 pms_sku_images
            List<SkuImagesEntity> skuImagesEntities = skuImagesService.getImagesBySkuId(skuId);
            skuItemVo.setImages(skuImagesEntities);
        }, executor);

        CompletableFuture.allOf(saleAttrFuture,descFuture,baseAttrFuture,imageFuture).get();

        return skuItemVo;
    }


}